CN102932714B - Boundary microphone for netmeeting - Google Patents
Boundary microphone for netmeeting Download PDFInfo
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- CN102932714B CN102932714B CN201210391085.1A CN201210391085A CN102932714B CN 102932714 B CN102932714 B CN 102932714B CN 201210391085 A CN201210391085 A CN 201210391085A CN 102932714 B CN102932714 B CN 102932714B
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Abstract
The invention discloses a boundary microphone for netmeeting. The boundary microphone for netmeeting comprises a voice transmitting unit and a voice receiving unit, wherein the voice transmitting unit comprises a microphone module, a signal processing module, an echo cancellation module, an A/D (Analog/Digital) converter and a USB (Universal Serial Bus) encoding module; and the voice receiving module comprises a USB decoding module, a D/A converter and a play monitoring module. The boundary microphone for netmeeting, provided by the invention, is simple to operate, small in echo in a voice transmission process and capable of achieving the effect of simultaneous meeting among multiple people in different places.
Description
Technical field
The present invention relates to microphone field, be specifically related to a kind of Web conference boundary microphone adopting Internet Transmission to carry out speech communication.
Background technology
Microphone is energy conversion device voice signal being converted to the signal of telecommunication, obtain applying more and more widely in actual life, especially in various meeting occasion, its effect seems particularly outstanding, therefore promotes the generation of the meeting microphone being exclusively used in informal discussion and other meeting occasions.But traditional meeting microphone need carry out voice transfer by the sound card of computer, has following shortcoming:
1, traditional meeting microphone can only realize people's speech, cannot realize multi-person conference;
2, traditional meeting microphone pickup is apart from short, and pickup scope is little, cannot realize a many people of microphone and use simultaneously, needs a people to join a meeting microphone;
Be easy to produce the phenomenon uttering long and high-pitched sounds and have echo when 3, monitoring the voice signal of traditional meeting microphone, considerably increase the cost of user and solution and to go wrong produced various expenses;
4, traditional meeting microphone will realize many people strange land meeting simultaneously, need carry out loaded down with trivial details connection and sum total to everyone microphone signal, and passes through the sound card transmission of computer, and the very difficult echo signal that solves brings a lot of inconvenience to strange land multi-person conference.
Therefore, traditional meeting microphone is generally only applicable to maybe can only carry out two people strange land meetings in meeting room, and the meeting of many people strange land needs the expensive communication apparatus of other eighteenth of the twenty general to realize.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the Web conference boundary microphone that a kind of echo is little, can realize the meeting of many people strange land simultaneously.
The present invention's adopted technical scheme that solves the problem is: a kind of Web conference boundary microphone, and it connects computer by USB interface, comprises voice transmitting element and voice receiving unit;
Wherein, described voice transmitting element comprises:
Microphone module: for picking up voice signal, and transmitting voice signal pickup arrived is to signal processing module;
Signal processing module: the voice signal of microphone pickup is amplified, strengthened and noise reduction process, and passes to echo cancellation module;
Echo cancellation module: analyzed by the voice signal after process, removes echo signal, is passed to A/D converter;
A/D converter: the analog through echo cancellation process is converted into digitized voice signal, and pass to USB coding module;
USB coding module: encoded through USB coding module by digitized voice signal, is connected to the voice signal after coding on computer, and passes through Internet Transmission to bipartite network meeting boundary microphone by computer;
Described voice receiving unit comprises:
USB decoder module: by the voice-over-net signal decoding received, and pass to D/A converter;
D/A converter: decoded for USB digitized voice signal process is converted into analog signal, and passes to loudspeaker module;
Play and monitor module: the analog signal obtained is play by audio monitoring resume module.
Described microphone module adopts can 360 degree ball-and-biscuit microphones picking up sources of sound.
Described audio monitoring module comprises earphone and plays monitoring submodule and loud speaker broadcasting monitoring submodule.
The present invention has following beneficial effect and advantage relative to prior art:
(1) microphone in the present invention adopts can 360 degree ball-and-biscuit microphones picking up sources of sound, greatly improve ten angles of microphone, can realize many people and make a speech simultaneously.Amplify through the voice signal of message processing module to pickup, strengthen and noise reduction process, increase microphone and pick up spacing, realize for many people object simultaneously.
(2) adopt echo cancellation module in the present invention, avoid occurring uttering long and high-pitched sounds and echo phenomenon, save the cost into head it off.
(3) USB interface is adopted to realize the connection of voice signal and computer in the present invention, and utilize network transmission signal to realize strange land communication, avoiding passing to when meeting microphone realizes strange land meeting needs to carry out loaded down with trivial details connection and sum total, also avoid transmitting by the sound card of computer the echo problem produced simultaneously, realize real-time clear monitoring conference content, improve the reliability of place remote meeting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention to be described in further detail below in conjunction with accompanying drawing 1 and embodiment for the ease of it will be appreciated by those skilled in the art that:
As shown in Figure 1, Web conference boundary microphone of the present invention comprises voice transmitting element and voice receiving unit.Wherein voice transmitting element comprises the microphone module, signal processing module, echo cancellation module, A/D converter, the USB coding module that connect successively; Voice receiving unit comprises the USB decoder module, D/A converter, the broadcasting monitoring module that connect successively, and described broadcasting is monitored module and comprised earphone broadcasting submodule and loud speaker broadcasting submodule.
During use, described microphone is connected with computer by USB interface, and computer is Net-connected computer.The function that microphone realizes strange land conference communication need send and phonetic incepting two steps through voice.In Fig. 1, adopt can the ball-and-biscuit microphone of 360 degree pickup sources of sound for microphone module, picks up the voice signal that all angles of meeting room send, and by the transmitting voice signal that arrives of pickup to signal processing module.The voice signal that signal processing module picks up microphone amplifies, strengthen and noise reduction process, then the voice signal handled well is passed to echo cancellation module.Voice signal after process is analyzed by echo cancellation module, the problem solving echo and utter long and high-pitched sounds, greatly improve definition and the validity of conference voice signal, passed to A/D converter again, analog signal through echo cancellation process is converted into digitized voice signal by A/D converter, and passes to USB coding module.Digitized voice signal is encoded by USB coding module, the voice signal after coding is connected to computer, and passes to the other side by network, thus realize the transmission of voice signal.
When microphone sends voice signal, the voice signal decoding that USB decoder module receives, be returned to D/A converter, D/A converter is converted into analog signal by treated for decoded for USB digitized voice signal, and the analog signal transmission obtained is monitored module to broadcasting, play after monitoring in module this signal being amplified, played back by earphone or loud speaker and listen to everyone of meeting room.
In the present invention, the not concrete functional module introduced all can adopt the ripe functional module in this area, does not repeat them here.
Above-described embodiment is only a kind of specific implementation of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (1)
1. a Web conference boundary microphone, it connects computer by USB interface, comprises voice transmitting element and voice receiving unit; Wherein, described voice transmitting element comprises:
Microphone module: for picking up voice signal, and transmitting voice signal pickup arrived is to signal processing module;
Signal processing module: the voice signal of microphone pickup is amplified, strengthened and noise reduction process, and passes to echo cancellation module;
Echo cancellation module: analyzed by the voice signal after process, removes echo signal, is passed to A/D converter;
A/D converter: the analog through echo cancellation process is converted into digitized voice signal, and pass to USB coding module;
USB coding module: encoded through USB coding module by digitized voice signal, is connected to the voice signal after coding on computer, and passes through Internet Transmission to bipartite network meeting boundary microphone by computer;
Described voice receiving unit comprises:
USB decoder module: the voice-over-net signal of reception is decoded, and passes to D/A converter;
D/A converter: decoded for USB digitized voice signal process is converted into analog signal, and passes to loudspeaker module;
Play and monitor module: the analog signal obtained is play by audio monitoring resume module;
Described microphone module adopts can 360 degree ball-and-biscuit microphones picking up sources of sound;
Described broadcasting is monitored module and is comprised earphone broadcasting monitoring submodule and loud speaker broadcasting monitoring submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210391085.1A CN102932714B (en) | 2012-10-16 | 2012-10-16 | Boundary microphone for netmeeting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210391085.1A CN102932714B (en) | 2012-10-16 | 2012-10-16 | Boundary microphone for netmeeting |
Publications (2)
| Publication Number | Publication Date |
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| CN102932714A CN102932714A (en) | 2013-02-13 |
| CN102932714B true CN102932714B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210391085.1A Expired - Fee Related CN102932714B (en) | 2012-10-16 | 2012-10-16 | Boundary microphone for netmeeting |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283697A (en) * | 2014-09-28 | 2015-01-14 | 北京塞宾科技有限公司 | Communication device and method capable of acquiring sound field information |
| CN104301558A (en) * | 2014-09-30 | 2015-01-21 | 成都英博联宇科技有限公司 | Intelligent conference telephone with display function |
| CN105392084A (en) * | 2015-12-18 | 2016-03-09 | 合肥寰景信息技术有限公司 | Network conference intercom interface sound transmission device |
| CN106817652A (en) * | 2017-02-15 | 2017-06-09 | 深圳壹秘科技有限公司 | Mobile conference portable unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179296A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and audio processing apparatus |
| CN201278553Y (en) * | 2008-06-27 | 2009-07-22 | 深圳华为通信技术有限公司 | Telephone terminal for meeting |
| CN202818579U (en) * | 2012-10-16 | 2013-03-20 | 杨志豪 | Network conference interface microphone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100827146B1 (en) * | 2004-09-20 | 2008-05-02 | 삼성전자주식회사 | Method and apparatus for elimination acoustic echo in mobile terminal |
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- 2012-10-16 CN CN201210391085.1A patent/CN102932714B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179296A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and audio processing apparatus |
| CN201278553Y (en) * | 2008-06-27 | 2009-07-22 | 深圳华为通信技术有限公司 | Telephone terminal for meeting |
| CN202818579U (en) * | 2012-10-16 | 2013-03-20 | 杨志豪 | Network conference interface microphone |
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| CN102932714A (en) | 2013-02-13 |
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